CN103179579B - The method for switching network of TD-SCDMA system, adjacent section planning method and apparatus - Google Patents
The method for switching network of TD-SCDMA system, adjacent section planning method and apparatus Download PDFInfo
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- CN103179579B CN103179579B CN201110434004.7A CN201110434004A CN103179579B CN 103179579 B CN103179579 B CN 103179579B CN 201110434004 A CN201110434004 A CN 201110434004A CN 103179579 B CN103179579 B CN 103179579B
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Abstract
The present invention relates to the method for switching network of a kind of TD SCDMA system, adjacent section planning method and apparatus.The method for switching network of the present invention comprises the following steps: when terminal is positioned at the first community, independently finds one second community in end side；The cell signal of this second community is measured in end side；The measurement report reporting this second community from end side at least includes the characteristic information of this second community to network side, this measurement report；Receive the measurement report of this second community at network side, and search this second community according to the characteristic information of this second community；When searching successfully, at network side using this second community as switching target small area, issue switching command to end side；When searching unsuccessfully, ignore this measurement report；And perform switching command in end side, to be switched to this Target cell.
Description
Technical field
The present invention relates to TD-SCDMA system, especially relate to the network switching side of TD-SCDMA system
Method, adjacent section planning method and apparatus.
Background technology
In cell mobile communication systems, each base station covers certain scope, and an a lot of base station connect together
Form network.It is said that in general, when mobile communication terminal (such as mobile phone) is in from self closer little
During district, signal is stronger, and now mobile communication terminal tends to reside in this community.But work as mobile communication terminal
When moving to another one community from this community, then need to be switched to network new community.
Network switching in cell mobile communication systems at present depends on the control of network side.With
As a example by TD-SCDMA system, when mobile communication terminal enters connection status, by network to mobile communication terminal
Issue neighboring BS information.Terminal, according to these neighboring BS information parameters, measures according to protocol requirement and reports.
The result that network reports according to measurement subsequently, issues switching command after assessment and process, and order is mobile logical
Letter terminal goes to carry out transmitting-receiving operation on Target cell.
In such scheme, the reliability of switching depends on the accuracy of network neighbor configuration.It is to say,
Terminal needs network to be configured with the multiple adjacent little of terminal current area exactly during neighbor cell switches
District.Block yet with actual environment exists high building, refraction, multipath, the complicated mode of propagation of decline etc.,
The complexity causing network neighbor to configure is higher, it sometimes appear that the situation of miss-configured neighboring cells.Real in this measure one
Example illustrates.
Assume to there is community A, B, C, D in a communications system, separately there is place 1,2,3,4.Community A exists
Place 1, community B is in place 2, and community C is in place 3, and community D is in place 4.A, B, C, D exist one
Individual carrier wave is with frequency carrier wave, and mobile communication terminal is just operated on this carrier wave.Network configuration is AB, BC,
CD adjacent area each other, AC, AD, BD adjacent area the most each other, although actually AC adjacent area each other.Work as movement
Communication terminal M, from place 1, moves to place 2, then moves to place 3.Preferably transfer sequence is little
District A is switched to community B, then is switched to community C.But owing to Lou Pei community C is the adjacent area of A, actual
Transfer sequence is community A, community B, community A, community B, community A.When mobile communication terminal moves to
At place 3, the most resident Ge Yuan community A of terminal.Due in network configuration, C Bu Shi community, nearly community
The adjacent area of A, so mobile communication terminal cannot be switched to community C.
It is the most negative that the consequence caused is joined in the leakage of this adjacent area.First, mobile communication terminal is to nearly community
C-shaped becomes up strong jamming, because residing in remote community, launching power and to be dealt into very big, to C cell uplink
Form strong jamming.This strong jamming can cause the up of other mobile communication terminals in C cell operation to be all subject to
To interference, the transmitting power of other mobile communication terminals can be raised.After the transmitting power of community C is raised, again
Can affect other mobile communication terminals of persistent district D, the coverage eventually causing community is greatly reduced.
This is because when a community nearly user with the most high-power send signal, remote user due to power limited,
Can be submerged in the signal of nearly user.Secondly, mobile communication terminal itself is very easy to call drop, because staying
Staying far-field region, weak output signal, the adjacent area that can switch is the most weak, simultaneously by other of community, near field
The interference of user.
Current technology is conceived to join from the angle of corrective networks neighbor cell configuration to solve adjacent area leakage and cause
The problem such as toggle path mistake.From surface, the scheme of solution has only to a community A, and C joins for mutually
For adjacent area, it is possible to solve problem.But in actual environment, this implicit neighboring BS relationship is from the network optimization
For difficulty very big, because it is highly difficult for the neighboring BS relationship of all communities being defined, and adjacent area
The definition of relation and optimization generally require substantial amounts of manpower and participate in.I.e. allow to spend a large amount of manpower to define adjacent area
Relation, but wireless signal is affected by environment very big, Changes in weather, New Buildings etc., and a variety of causes at any time may be used
This coarse neighboring BS relationship can be changed, so that defined good neighboring BS relationship is ineffective.
Summary of the invention
It is an object of the present invention to provide method for switching network and the device of a kind of TD-SCDMA system,
Even if also can successfully be switched to this adjacent area in the case of adjacent area leakage is joined.
It is another object of the present invention to be to provide a kind of adjacent section planning method of TD-SCDMA system, it is possible to
Participate in solving adjacent area with less manpower and leak the problem joined.
A technical scheme according to the present invention, introduces on mobile communication terminal independently finds strong adjacent area and carry out
The technology of report.Network can be according to report, after getting in touch with the Target cell of report, to mobile communication eventually
End issues switching command, and order mobile communication terminal switches to this community.Further, network can utilize movement
The neighboring BS relationship of communication terminal active reporting, dynamically adjusts the neighbor cell configuration of network side.
The method for switching network of TD-SCDMA system proposed by the invention, comprises the following steps: work as end
When end is positioned at the first community, independently find one second community in end side；This second community is measured in end side
Cell signal；Reporting the measurement report of this second community to network side from end side, this measurement report is at least
Characteristic information including this second community；The measurement report of this second community is received at network side, and according to this
The characteristic information of the second community searches this second community；When searching successfully, at network side by this second community
As switching target small area, issue switching command to end side；When searching unsuccessfully, ignore this measurement report；
And perform switching command in end side, to be switched to this Target cell.
In one embodiment of this invention, said method is additionally included in network side and judges that switching is the most successful, when
During handoff failure, update the number of times being switched to this second community handoff failure from this first community.
In one embodiment of this invention, when searching successfully, it is additionally included in network side and judges this handoff failure
Number of times whether less than one first thresholding, and when the number of times of this handoff failure is less than this first thresholding by this
This measurement, as switching target small area, is ignored when the number of times of this handoff failure is more than this first thresholding in two communities
Report.
In one embodiment of this invention, also wrap after end side measures the cell signal of this second community
Include, it is judged that whether the signal of this second community was continued above within an assessment cycle reports thresholding, to determine is
The no measurement report reporting this second community.
In one embodiment of this invention, the characteristic information of this second community includes subdistrict frequency point and training sequence
Code word.
In one embodiment of this invention, end side independently finds that the method for this second community includes: receive
The frequency list of networking in the region that automatic network side issues；Receive the time slot TS0 of each dominant frequency point in frequency list
Signal and do not read the broadcast message of this community, utilize in time slot TS0 signal training sequence code word coupling can
The training sequence code word of energy, detects the training sequence code word of strong cell signal.
In another embodiment of the invention, end side independently finds that the method for this second community includes: foundation
The frequency interval of neighboring BS information and place frequency band, extrapolate the dominant frequency point that networking may be used；Receive dominant frequency point
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence in time slot TS0 signal
The training sequence code word that codeword matching is possible, detects the training sequence code word of strong cell signal.
In one embodiment of this invention, this second community is searched at this according to the characteristic information of this second community
Method include: from the beginning of the adjacent area of this first community is gathered, to the collection of the adjacent area of the adjacent area of this first community
Close progressively expanded scope to make a look up.
In one embodiment of this invention, this second community is searched at this according to the characteristic information of this second community
Method include: make a look up at preset range according to the geography information of this first community.
The adjacent section planning method of a kind of TD-SCDMA system proposed by the invention, comprises the following steps: when
When terminal is positioned at the first community, independently find one second community in end side；This is measured second little in end side
The cell signal in district；Reporting the measurement report of this second community to network side from end side, this measurement report is extremely
Include the characteristic information of this second community less；The measurement report of this second community is received at network side, and according to
The characteristic information of this second community searches this second community；When searching successfully, at network side, this is second little
District, as switching target small area, issues switching command to end side；When searching unsuccessfully, ignore this measurement report
Accuse；Switching command is performed, to be switched to this Target cell in end side；Judge whether switching becomes at network side
Merit, when handover success, updates the number of times being switched to this second community handover success from this first community；Sentence
Whether the number of times of this handover success disconnected is more than a thresholding, and will when the number of times of this handover success is more than this thresholding
This second community is added to the adjacent area of this first community.
In one embodiment of this invention, end side independently finds that the method for this second community includes: receive
The frequency list of networking in the region that automatic network side issues；Receive the time slot TS0 of each dominant frequency point in frequency list
Signal and do not read the broadcast message of this community, utilize the training sequence code word in time slot TS0 signal go coupling
Possible training sequence code word, detects the training sequence code word of strong cell signal.
In one embodiment of this invention, end side independently finds that the method for this second community includes: according to adjacent
The frequency interval of district's information and place frequency band, extrapolate the dominant frequency point that networking may be used；Receive dominant frequency point
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence code in time slot TS0 signal
Word goes to mate possible training sequence code word, detects the training sequence code word of strong cell signal.
In one embodiment of this invention, the characteristic information of this second community includes subdistrict frequency point and training sequence
Code word.
In one embodiment of this invention, this second community is searched at this according to the characteristic information of this second community
Method include: from the beginning of the adjacent area of this first community is gathered, progressively expanded scope makes a look up.
In one embodiment of this invention, this second community is searched at this according to the characteristic information of this second community
Method include: make a look up in preset range according to the geography information of this first community.
In one embodiment of this invention, also wrap after this second community is added to the adjacent area of this first community
Include and this interpolation event is exported to a daily record.
The present invention also proposes a kind of method that end side in TD-SCDMA system performs network switching, including
Following steps: when terminal is positioned at the first community, autonomous discovery one second community；Measure this second community
Cell signal；Report the measurement report of this second community to network side, this measurement report at least include this second
The characteristic information of community；Receive the switching command from network side；And perform this switching command, with switching
To this second community.
The method that a kind of network side in TD-SCDMA system of the present invention performs network switching, including following
Step: receive the measurement report of the second community from the terminal to report being positioned at the first community, this measurement report
At least include the characteristic information of this second community；It is second little that characteristic information according to this second community searches this
District；When searching successfully, using this second community as switching target small area, issue switching command to terminal,
It is switched to this Target cell with order terminal；And when searching unsuccessfully, ignore this measurement report.
The present invention also proposes a kind of end side in TD-SCDMA system and performs the device of network switching, bag
Include: for when terminal is positioned at the first community, independently find the device of one second community；For measure this
The device of the cell signal of two communities；For reporting the measurement report device to network side of this second community,
This measurement report at least includes the characteristic information of this second community；For receiving the switching command from network side
Device；And for performing this switching command to be switched to the device of this second community.
The present invention also proposes a kind of network side in TD-SCDMA system and performs the device of network switching, bag
Include: for receiving the device of the measurement report of the second community from the terminal to report being positioned at the first community, should
Measurement report at least includes the characteristic information of this second community；For looking into according to the characteristic information of this second community
Look for the device of this second community；For when searching successfully, using this second community as switching target small area,
Issue switching command to end side, be switched to the device of this Target cell with order terminal；And for when looking into
When looking for unsuccessfully, ignore the device of this measurement report.
Due to the fact that the above technical scheme of employing, be allowed to compared with prior art, by TD-SCDMA
The mobile communication terminal of system independently finds community and reports that, to network, network transmitting order to lower levels performs to cut by terminal
Change, it is possible to effectively avoid the strong problem of co-channel interference caused because of end path handoff error, reduce network
Optimize cost, improve network performance.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing to this
Bright detailed description of the invention elaborates, wherein:
Fig. 1 illustrates the handoff procedure schematic diagram of existing cell mobile communication systems.
Fig. 2 illustrates the method for switching network flow chart of one embodiment of the invention.
Fig. 3 illustrates the method for switching network flow chart of another embodiment of the present invention.
Fig. 4 illustrates network switching and the adjacent section planning method flow diagram of another embodiment of the present invention.
Fig. 5 illustrates the cell switch process signal in the mobile communication terminal moving process of one embodiment of the invention
Figure.
Detailed description of the invention
The present invention be directed to network switching and the adjacent section planning technology of cell mobile communication systems.Here, moving
When mobile communication terminal will leave current area, in addition to network is handed down to the adjacent area of mobile communication terminal, move
Mobile communication terminal can also independently find strong adjacent area and report.Network is according to the report of mobile communication terminal
Accusing, after getting in touch with the Target cell reported, issue switching command to mobile communication terminal, order moves
Mobile communication terminal switches to this community.In this manner it is possible to avoid owing to causing strong jamming to ask after the handoff error of path
Topic.
First the method that mobile communication terminal independently finds strong adjacent area is described as a example by TD-SCDMA system.
TD-SCDMA system is synchronization system, and network side sends bacon signal at dominant frequency point time slot TS0 always,
Bacon signal is broadcast singal.Known way is that network side issues neighboring BS information, mobile communication terminal
Time slot TS0 training sequence (midamble) data receiving adjacent area are received signal code power (Received
Signal Code Power, RSCP) to measure, the result of measurement reports network side.At embodiments of the invention
In, the mobile communication terminal in TD-SCDMA system can utilize the bacon signal of dominant frequency point time slot TS0
Independently find adjacent area.Such as, mobile communication terminal receives time slot TS0 signal, and going to mate 128 may
Midamble code, detect the midamble code word of strong cell signal.If this code word is not in adjacent area
Middle appearance, illustrates that this is that network leaks the strong adjacent area joined.
Fig. 2 illustrates the method for switching network flow chart of one embodiment of the invention.In step 201, mobile logical
When letter terminal is positioned in the first community, mobile communication terminal independently finds the second community, as this first community
One of adjacent area.Such as TD-SCDMA system, the feature of a cell signal has 2 letters
Breath characterizes, and one is frequency, and one is midamble code word.Mobile communication terminal obtains unknown strong adjacent area
Frequency point information.Then, mobile communication terminal receives the time slot TS0 signal of dominant frequency point in frequency, detects
Midamble part data therein, go to mate 128 possible midamble codes, detect strong adjacent area
The midamble code word of signal.If this code word does not occurs in the adjacent area that terminal configures at network, say
Bright this is that network leaks the strong adjacent area joined.Mobile communication terminal records these frequencies and codeword information.
In step 202, the autonomous neighboring area signal found is measured, and then carries out by mobile communication terminal
Smooth and assessment etc. operates.During measuring, terminal needs this adjacent area to tie up as conventional cell
Protect, safeguard that the synchronization of community and RSCP measure.
In step 203, the characteristic information of the adjacent area independently found is included in measurement report by mobile communication terminal
In report network.These characteristic informations include but not limited to, the frequency of community, code word and signal intensity
Deng.Mobile communication terminal can report thresholding judging that cell signal was continued above within an assessment cycle
After, then perform to report the step 203 of network.Here, for this assessment cycle and report thresholding, eventually
End can speculate according to other adjacent areas, it is possible to from network side with the transmitting signaling downwards developed, it is also possible to enter
Act and first arrange.In an embodiment of the present invention, the measurement report that community reports can be in current signaling
Carry, it is also possible to arrange new signaling and report.
In step 204, network side receives the measurement report of mobile communication terminal.Hereafter in step 205, pin
To the second community indicated by measurement report, network side begins look for the specifying information of the second community.Such as net
Network side according to the frequency in reporting information and codeword information in broad sense adjacent area is gathered or geographical according to community
Information searches community in the range of certain distance, obtains the identification number (ID) of this community.
For TD-SCDMA system, a width of 15M of band of current A frequency range, totally 9 frequencies, 128
Code word, then actual permissible combination is 9 × 128=1152.This numeral is meant that if networking,
1152 different communities can be distinguished with code word according to frequency.In certain area, such community
Quantity is the hugest.If therefore planned when networking, according to terminal to report frequency and code word
Information inquire about community and can realize completely.The advantage of this way is, mobile communication terminal is not
Must time-consumingly go to read cell broadcast information and obtain real community ID.And if read cell broadcast information,
Need whole TS0 data.Owing in TD-SCDMA system, TS6 with TS0 is adjacent (TS6 carrying
Business datum), terminal works carrier wave and adjacent area carrier wave are not necessarily with frequency, and common single antenna is cannot be same
Time receive TS6 business and simultaneously receive again the broadcast of TS0.
If searching failure in step 206, when network cannot confirm, step 207 can be entered and ignore this survey
Report, flow process terminates.Whereas if search successfully, it is possible to mate this second community, then enter step 208
Using this second community as switching target small area, set up link resource in switching target small area, issue switching life
Order makes its step 209 switched over to mobile communication terminal.
In end side, if confirming handover success in step 211, then carry out business (step at Target cell
215), process completes, and otherwise switches back into former community, the i.e. first community in step 213.
At network side, if confirming handover success in step 210, then discharge former cellular link in step 214,
Process completes, and otherwise discharges Target cell link in step 212, and maintains former cellular link.
In another embodiment of the invention, network side can also safeguard the switching note being switched to a Target cell
Record.Switching record can record the frequency of failure being switched to this Target cell from former community, thus is this
Switching provides decision-making foundation.Fig. 3 illustrates the method for switching network flow chart of another embodiment of the present invention.In step
Rapid 301, when mobile communication terminal is in the first community, autonomous discovery the second community.Such as
For TD-SCDMA system, the feature of a cell signal has 2 information representations, and one is frequency, and one
Individual is midamble code word.Mobile communication terminal obtains the frequency point information of unknown strong adjacent area.Then, mobile
Communication terminal receives the time slot TS0 signal of the dominant frequency point in frequency, it is thus achieved that midamble code word therein,
Go to mate 128 possible midamble codes, detect the midamble code word of strong cell signal.If
This code word does not occurs in adjacent area, illustrates that the community of correspondence is that network leaks the strong adjacent area joined.Mobile communication is eventually
End obtains the frequency point information of unknown strong adjacent area simultaneously, and records these code words and frequency point information.
In step 302, the autonomous cell signal found is measured, and smooths by mobile communication terminal
Operate with assessment etc..During measuring, terminal needs this community to safeguard as conventional cell, dimension
The synchronization and the RSCP that protect community measure.
In step 303, the cell characteristic information independently found is included in measurement report by mobile communication terminal
Report network.These characteristic informations include but not limited to, the frequency of community, code word and signal intensity etc..
After mobile communication terminal can be continued above within an assessment cycle report thresholding judging cell signal, then
Perform to report the step 303 of network.Here, for this assessment cycle and report thresholding, terminal is permissible
Speculate according to other adjacent areas, it is possible to from network side with the transmitting signaling downwards developed, it is also possible to carry out in advance
Agreement.In an embodiment of the present invention, community reports and can carry in current signaling, it is also possible to
Arrange new signaling to report.
In step 304, network side receives the measurement report of mobile communication terminal.Hereafter in step 305, pin
To the first community indicated by measurement report, network side begins look for the specifying information of the second community.Such as net
Network side is lookup community in broad sense adjacent area is gathered according to the frequency in reporting information and codeword information, or according to
The geography information of the first community searches community in the range of certain distance, obtains the identification number (ID) of this community.
If searching failure in step 306, when network cannot confirm, step 307 can be entered and ignore this survey
Report, flow process terminates.Whereas if search successfully, it is possible to mate the second community, then enter step 308 and enter
One step judges that whether handoff failure number of times is less than the first thresholding M (M is more than 0).If result is yes, then
Enter step 309 using this second community as switching target small area, set up link resource in switching target small area,
Issue switching command and make its step 310 switched over to mobile communication terminal.Otherwise, then step 307 is entered
Ignore this to observe and predict.
In end side, if confirming handover success in step 311, then carry out business (step at Target cell
315), process completes, and otherwise switches back into former community, the i.e. first community in step 313.
At network side, if confirming handover success in step 312, then discharge former cellular link in step 316,
Process completes.Otherwise discharge Target cell link in step 314, maintain former cellular link, and update from
The handoff failure number of times of one community to the second community.
In TD-SCDMA system, mobile communication terminal can obtain unknown adjacent area by various methods
Frequency point information.Such as, the frequency list information of networking in region, mobile communication terminal root are issued from network side
Community is independently found according to this information.This process needs newly-increased signaling.In another embodiment,
Mobile communication terminal infers that possible frequency independently finds voluntarily.The carrier wave of TD-SCDMA is 1.6M
Or according to the frequency point information of this subdistrict frequency point and adjacent area, 1.4M, can show that this network carriers interval is
1.6M or 1.4M.Then working frequency range is drawn further according to this subdistrict frequency point place frequency.At working frequency range
In, by intercarrier every extrapolating available carrier frequency point, carry out signal reception, detect midabmle code
Word.Owing in TD-SCDMA system, midabmle code word is more, there are 128 code words, thus actual
Networking is difficult to the close same frequency in 2 geographical position of the appearance community with midamble code.Therefore movement is worked as
When communication terminal detects frequency and midamlbe code and reports network, network just can distinguish terminal report
Which community accuse is.
Network side searches community according to the frequency in reporting information and codeword information in broad sense adjacent area is gathered
Illustrative methods is described as follows.In this, it is assumed that the adjacent area collection of the resident community of mobile communication terminal is combined into C (1),
The adjacent area collection of adjacent area is combined into C (2), and the collection of the adjacent area of the adjacent area of adjacent area is combined into C (3), the like,
C (4), C (5) ....In an embodiment of the present invention, network can search mobile communication terminal using the following method
The community reported.In one embodiment, network can according to frequency and midamble code word at C (2) and C (3),
Even c (4) C (5) ... make a look up in set.In another embodiment, network can also be according to peripheral cell
Geography information make a look up.Limit a distance threshold at this, make a look up in this distance threshold.
This distance can set different values according to cell coverage area size.
Fig. 5 illustrates the cell switch process signal in the mobile communication terminal moving process of one embodiment of the invention
Figure.With reference to shown in Fig. 5, hexagonal area is community, and rectangle frame is mobile communication terminal.
Adjacent area set C (1) of community 0 is: set of cells (4,8,12,16,20,24)；
Adjacent area set C (2) of the adjacent area set of community 0 is:
Set of cells (0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72)
Adjacent area set C (3) of the adjacent area set of the adjacent area set of community 0 is:
(0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,10
0,104,108,112,116,120,124,1,5,9,13,17).
Time initial, mobile communication terminal resides in community 0, moves in the direction of arrows, 4 positions in corresponding diagram
Put A, B, C, D.By geographical position, toggle path should be (0 → 20 → 68 → 9).But due to wireless communication
Number having that building blocks, reflects, scattering etc. is propagated, actual toggle path may be
(0 → 20 → 0 → 20 → 0), last weak letter call drop.And in D point, community 9 coverage, upper traveling
Row peak power sends, and the same frequency user of community 9 is caused up strong jamming.
According to embodiments of the invention, at C point and D point, mobile communication terminal just can independently find strong community
The frequency of 68 and 9 and code word, report community 0.Network gathers C (1), C (2), C (3) according to the adjacent area of community 0
Make a look up, it is possible to find concrete community ID (in c (2), 9 communities are in c (3) in 68 communities),
Then, after getting in touch with this community, operation is switched over.As replacement, network can also be according to ground, community
The reason a range of community of information searching draws the concrete community ID of community 68 and 9.
When network side maintains the switching record being switched to a Target cell from former community, can be sharp further
The planning of adjacent area is assisted with this switching record.Fig. 4 illustrates network switching and the neighbour of one embodiment of the invention
Section planning method flow diagram.In step 401, mobile communication terminal independently finds that when the first community second is little
District.Such as TD-SCDMA system, the feature of a cell signal has 2 information representations,
One is frequency, and one is midamble code word.Mobile communication terminal obtains the frequency letter of unknown strong adjacent area
Breath.Then, mobile communication terminal receives dominant frequency point time slot TS0 signal, detects midamble code therein
Word, goes to mate 128 possible midamble code words, detects the midamble code word of strong cell signal.
If this code word does not occurs in adjacent area, illustrate that this adjacent area is that network leaks the strong adjacent area joined.Mobile communication
Terminal obtains the frequency point information of unknown strong adjacent area simultaneously, and records these code words and frequency point information.
In step 402, the signal of autonomous the second community found is measured, goes forward side by side by mobile communication terminal
Capable smooth and assessment etc. operates.During measuring, terminal needs this second community to enter as conventional cell
Row is safeguarded, safeguards that the synchronization of community and RSCP measure.
In step 403, the characteristic information of the second community independently found is reported network by mobile communication terminal.
These characteristic informations include but not limited to, the frequency of community, code word and signal intensity etc..Mobile communication is eventually
After end can be continued above within an assessment cycle report thresholding judging cell signal, then perform to report
The step 403 of network.Here, for this assessment cycle and report thresholding, terminal can be adjacent according to other
District speculates, it is possible to from network side with the transmitting signaling downwards developed, it is also possible to arrange in advance.At this
In inventive embodiment, community reports can carry in current signaling, it is also possible to arrange new letter
Order reports.
In step 404, network side receives the measurement report of mobile communication terminal.Hereafter in step 405, pin
To the second community indicated by measurement report, network side begins look for the specifying information of the second community.Such as net
Network side is lookup community in broad sense adjacent area is gathered according to the frequency in reporting information and codeword information, or according to
Community geography information searches community in the range of certain distance, obtains the identification number (ID) of this second community.
If searching failure in step 406, when network cannot confirm, step 407 can be entered and ignore this survey
Report, flow process terminates.Whereas if search successfully, it is possible to mate this community, then enter step 408 and enter one
Step judges that whether handoff failure number of times is less than the first thresholding M (M is positive integer).If result is yes, then
Enter step 409 using this community as switching target small area, set up link resource in switching target small area, under
Send out switching command and make its step 410 switched over to mobile communication terminal.Otherwise, then step 407 is entered
Ignore this to observe and predict.
In end side, if confirming handover success in step 411, then carry out business (step at Target cell
415), process completes, and otherwise switches back into former community, the i.e. first community in step 413.
At network side, if confirming handover success in step 412, then discharge former cellular link in step 416,
And the handover success number of times being switched to the community that terminal independently reports from former community is added 1, thus update switching
Number of success.Then (N is for just to judge whether be more than the second thresholding N by the number of times of handover success in step 417
Integer).If result is yes, then entering step 418, the community reported by mobile communication terminal is added to
The adjacent area of former community, thus update Neighboring Cell List.This interpolation event can export in daily record, to remind
Network maintenance staff.Preferably in step 419, if the neighbor data in Neighboring Cell List is more than the 3rd thresholding
K (K is positive integer), finds and least commonly uses adjacent area, delete, and equally exports in daily record.
If it addition, confirm handoff failure in step 412, then discharge Target cell link in step 414,
Maintain former cellular link, and update the frequency of failure.
According to this embodiment, add the way of network neighbor according to the number of times of handover success, it is possible to accomplish net
The semi-automatic networking of network, simplifies the adjacent section planning of network, saves the cost of planning.By contrast, current
Prior art is completely dependent on manpower and carries out adjacent section planning, and this causes the work difficulty of the network optimization very greatly, and
And put into the biggest, it is highly detrimental to the quality control after the large area of TD-SCDMA is arranged net.
In the above embodiment of the present invention, independently sent out by the mobile communication terminal in TD-SCDMA system
Existing community also reports that, to network, network transmitting order to lower levels performs switching by terminal, it is possible to effectively avoid because eventually
The strong problem of co-channel interference that end path handoff error causes, reduces network optimization cost, improves network performance.
Further, the number of times of the community successful switch that Network records terminal independently reports, can record according to this will
This community is added into the adjacent area of oneself, accomplishes semi-automatic networking.This neighboring BS information can be utilized simultaneously,
To co-channel interference situation, take in when being scheduling channel configuration, reduce co-channel interference.
Although the present invention discloses as above with preferred embodiment, so it is not limited to the present invention, Ren Heben
Skilled person, without departing from the spirit and scope of the present invention, when making a little amendment and perfect,
Therefore protection scope of the present invention is when with being as the criterion that claims are defined.
Claims (14)
1. a method for switching network for TD-SCDMA system, comprises the following steps:
When terminal is positioned at the first community, independently find one second community in end side；
The cell signal of this second community is measured in end side；
From end side report the measurement report of this second community to network side, this measurement report at least include this
The characteristic information of two communities；
Receive the measurement report of this second community at network side, and search according to the characteristic information of this second community
This second community；
When searching successfully, at network side using this second community as switching target small area, issue switching command
To end side；When searching unsuccessfully, ignore this measurement report；And
Switching command is performed, to be switched to this Target cell in end side；
Wherein end side independently finds that the method for this second community includes one of:
Receive from the frequency list of networking in the region that network side issues；Receive each dominant frequency point in frequency list
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence in time slot TS0 signal
The training sequence code word that codeword matching is possible, detects the training sequence code word of strong cell signal；
According to frequency interval and the place frequency band of neighboring BS information, extrapolate the dominant frequency point that networking may be used；Connect
Receive the time slot TS0 signal of dominant frequency point and do not read the broadcast message of this community, utilize in time slot TS0 signal
The training sequence code word that training sequence code word coupling is possible, detects the training sequence code word of strong cell signal.
2. the method for claim 1, it is characterised in that be additionally included in network side and judge that switching is
No success, when handoff failure, updates the number of times being switched to this second community handoff failure from this first community.
3. method as claimed in claim 2, it is characterised in that when searching successfully, be additionally included in net
Network side judges that the number of times of this handoff failure, whether less than one first thresholding, and is less than at the number of times of this handoff failure
Using this second community as switching target small area during this first thresholding, this handoff failure number of times more than this
This measurement report is ignored during one thresholding.
4. the method for claim 1, it is characterised in that measure this second community in end side
Also include after cell signal, it is judged that on whether the signal of this second community was continued above within an assessment cycle
Report thresholding, to determine whether to report the measurement report of this second community.
5. the method for claim 1, it is characterised in that the characteristic information of this second community includes
Subdistrict frequency point and training sequence code word.
6. the method for claim 1, it is characterised in that at this according to the feature of this second community
The method of this second community of information searching includes: from the beginning of the adjacent area of this first community is gathered, first little to this
The set of the adjacent area of the adjacent area in district progressively expanded scope makes a look up.
7. the method for claim 1, it is characterised in that at this according to the feature of this second community
The method of this second community of information searching includes: carry out at preset range according to the geography information of this first community
Search.
8. an adjacent section planning method for TD-SCDMA system, comprises the following steps:
When terminal is positioned at the first community, independently find one second community in end side；
The cell signal of this second community is measured in end side；
From end side report the measurement report of this second community to network side, this measurement report at least include this
The characteristic information of two communities；
Receive the measurement report of this second community at network side, and search according to the characteristic information of this second community
This second community；
When searching successfully, at network side using this second community as switching target small area, issue switching command
To end side；When searching unsuccessfully, ignore this measurement report；
Switching command is performed, to be switched to this Target cell in end side；
Judge that switching is the most successful at network side, when handover success, update and be switched to this from this first community
The number of times of the second community handover success；
Judge the number of times of this handover success whether more than a thresholding, and at the number of times of this handover success more than this door
In limited time this second community is added to the adjacent area of this first community；
Wherein end side independently finds that the method for this second community includes one of:
Receive from the frequency list of networking in the region that network side issues；Receive each dominant frequency point in frequency list
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence in time slot TS0 signal
The training sequence code word that codeword matching is possible, detects the training sequence code word of strong cell signal；
According to frequency interval and the place frequency band of neighboring BS information, extrapolate the dominant frequency point that networking may be used；Connect
Receive the time slot TS0 signal of dominant frequency point and do not read the broadcast message of this community, utilize in time slot TS0 signal
The training sequence code word that training sequence code word coupling is possible, detects the training sequence code word of strong cell signal.
9. method as claimed in claim 8, it is characterised in that the characteristic information of this second community includes
Subdistrict frequency point and training sequence code word.
10. method as claimed in claim 8, it is characterised in that at this according to the feature of this second community
The method of this second community of information searching includes: from the beginning of the adjacent area of this first community is gathered, progressively expand model
Enclose and make a look up.
11. methods as claimed in claim 8, it is characterised in that at this according to the feature of this second community
The method of this second community of information searching includes: enter in preset range according to the geography information of this first community
Row is searched.
12. methods as claimed in claim 8, it is characterised in that this second community is added to this first
Also include after the adjacent area of community this interpolation event is exported to a daily record.
The method that 13. 1 kinds of end side in TD-SCDMA system perform network switching, comprises the following steps:
When terminal is positioned at the first community, autonomous discovery one second community；
Measure the cell signal of this second community；
The measurement report reporting this second community at least includes this second community to network side, this measurement report
Characteristic information；
Receive the switching command from network side；
Perform this switching command, to be switched to this second community；
Wherein end side independently finds that the method for this second community includes one of:
Receive from the frequency list of networking in the region that network side issues；Receive each dominant frequency point in frequency list
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence in time slot TS0 signal
The training sequence code word that codeword matching is possible, detects the training sequence code word of strong cell signal；
According to frequency interval and the place frequency band of neighboring BS information, extrapolate the dominant frequency point that networking may be used；Connect
Receive the time slot TS0 signal of dominant frequency point and do not read the broadcast message of this community, utilize in time slot TS0 signal
The training sequence code word that training sequence code word coupling is possible, detects the training sequence code word of strong cell signal.
14. 1 kinds of end side in TD-SCDMA system perform the device of network switching, including:
For when terminal is positioned at the first community, independently find the device of one second community；
For measuring the device of the cell signal of this second community；
For reporting the measurement report device to network side of this second community, this measurement report at least includes this
The characteristic information of the second community；
For receiving the device of the switching command from network side；
For performing this switching command to be switched to the device of this second community；
Wherein this is used for when terminal is positioned at the first community, the autonomous device finding one second community be carried out with
One of lower method:
Receive from the frequency list of networking in the region that network side issues；Receive each dominant frequency point in frequency list
Time slot TS0 signal and do not read the broadcast message of this community, utilize the training sequence in time slot TS0 signal
The training sequence code word that codeword matching is possible, detects the training sequence code word of strong cell signal；
According to frequency interval and the place frequency band of neighboring BS information, extrapolate the dominant frequency point that networking may be used；Connect
Receive the time slot TS0 signal of dominant frequency point and do not read the broadcast message of this community, utilize in time slot TS0 signal
The training sequence code word that training sequence code word coupling is possible, detects the training sequence code word of strong cell signal.
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| CN104904270B (en) * | 2013-11-19 | 2019-07-09 | 华为技术有限公司 | Determine the method and apparatus for entering wifi coverage area |
| CN107241750B (en) * | 2016-03-29 | 2020-02-07 | 中国移动通信有限公司研究院 | Information identification method and equipment |
| CN109565699B (en) * | 2016-08-19 | 2020-12-08 | 华为技术有限公司 | Network node and method thereof |
| CN108271223B (en) * | 2016-12-31 | 2020-09-25 | 中国移动通信集团吉林有限公司 | Adjacent cell optimization method and electronic equipment |
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| CN1867188A (en) * | 2006-02-13 | 2006-11-22 | 华为技术有限公司 | Switching method, switching device and mobile terminal |
| CN101784066A (en) * | 2009-01-19 | 2010-07-21 | 大唐移动通信设备有限公司 | Neighboring cell type setting system and method, and method and device for switching neighboring cell by user equipment |
| CN102014446A (en) * | 2009-09-08 | 2011-04-13 | 华为技术有限公司 | Determining method and device for target cell |
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| CN1867188A (en) * | 2006-02-13 | 2006-11-22 | 华为技术有限公司 | Switching method, switching device and mobile terminal |
| CN101784066A (en) * | 2009-01-19 | 2010-07-21 | 大唐移动通信设备有限公司 | Neighboring cell type setting system and method, and method and device for switching neighboring cell by user equipment |
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